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import os
import uuid
def create_premiere_xml(project_name, video_path, overlay_path, duration_frames, width=1080, height=1920, timebase=30, face_data=None, source_width=1920, source_height=1080):
"""
Generates a Premiere Pro XML (xmeml version 4) compliant with vertical restrictions.
video_path: Path to the main video (Track 1)
overlay_path: Path to the transparent overlay video (Track 2), can be None.
face_data: List of dicts [{"frame": i, "faces": [[x1,y1,x2,y2]]}, ...]
source_width/height: Resolution of the source video for coordinate normalization.
"""
# Generate unique IDs
sequence_uuid = str(uuid.uuid4())
video_clip_id = "clipitem-video-1"
overlay_clip_id = "clipitem-overlay-1"
audio_clip_id = "clipitem-audio-1"
video_file_id = f"file-video-{os.path.basename(video_path)}"
audio_file_id = f"file-audio-{os.path.basename(video_path)}"
overlay_file_id = f"file-overlay-{os.path.basename(overlay_path)}" if overlay_path else None
# Scale Calculation
# We want to fill the Vertical Screen (Height 1920) with the Source Height (source_height)
# Scale = Target / Source * 100
scale_value = (height / source_height) * 100.0
# ensure it fills width too (if source is super tall? unlikely 16:9)
if (source_width * (scale_value/100)) < width:
scale_value = (width / source_width) * 100.0
# Keyframe Generation for Center/Position (Absolute Pixels)
center_keyframes = ""
default_horiz = width / 2.0
default_vert = height / 2.0
if face_data:
kf_blocks = []
sorted_data = sorted(face_data, key=lambda x: x['frame'])
s_factor = scale_value / 100.0
src_cx = source_width / 2.0
src_cy = source_height / 2.0
last_h = default_horiz
last_v = default_vert
for entry in sorted_data:
frame_idx = entry['frame']
if frame_idx >= duration_frames: break
# Simple Logic: Focus on the "First" face
faces = entry.get('faces', [])
current_h = last_h
current_v = last_v
if faces and len(faces) > 0:
f = faces[0]
if len(f) == 4:
cx = (f[0] + f[2]) / 2.0
cy = (f[1] + f[3]) / 2.0
off_x = cx - src_cx
off_y = cy - src_cy
# Target = CenterSeq - (OffsetSrc * Scale)
target_h = default_horiz - (off_x * s_factor)
target_v = default_vert - (off_y * s_factor)
# CLAMP SAFEGUARDS (Keep center within logical bounds)
# Don't let the anchor point go way off screen.
# The video needs to cover the screen (1080x1920)
# At scale 88% of 4K, video is ~3400px wide.
# We can move it quite a bit.
# Limit target center to be within -1000 to +2000 roughly?
# Let's clamp to strict +/- 2000 of center to avoid overflow errors
target_h = max(-3000, min(4000, target_h))
target_v = max(-3000, min(5000, target_v))
current_h = target_h
current_v = target_v
last_h = current_h
last_v = current_v
kf_blocks.append(f"""
<keyframe>
<when>{frame_idx}</when>
<value>
<horiz>{current_h:.2f}</horiz>
<vert>{current_v:.2f}</vert>
</value>
</keyframe>""")
center_keyframes = "\n".join(kf_blocks)
timecode_block = f"""
<timecode>
<rate>
<timebase>{timebase}</timebase>
<ntsc>FALSE</ntsc>
</rate>
<string>00:00:00:00</string>
<frame>0</frame>
<displayformat>NDF</displayformat>
</timecode>"""
def get_file_block(fid, fpath, is_audio_only=False):
# File defines Source properties
width_f = source_width
height_f = source_height
audio_blk = """
<audio>
<samplecharacteristics>
<depth>16</depth>
<samplerate>48000</samplerate>
</samplecharacteristics>
<channelcount>2</channelcount>
</audio>""" if not is_audio_only else ""
return f"""
<file id="{fid}">
<name>{os.path.basename(fpath)}</name>
<pathurl>{fpath}</pathurl>
<rate>
<timebase>{timebase}</timebase>
<ntsc>FALSE</ntsc>
</rate>
<duration>{duration_frames}</duration>
<timecode>
<rate>
<timebase>{timebase}</timebase>
<ntsc>FALSE</ntsc>
</rate>
<string>00:00:00:00</string>
<frame>0</frame>
<displayformat>NDF</displayformat>
</timecode>
<media>
<video>
<samplecharacteristics>
<width>{width_f}</width>
<height>{height_f}</height>
<alpha>straight</alpha>
</samplecharacteristics>
</video>
{audio_blk}
</media>
</file>"""
track_overlay_block = ""
if overlay_path:
track_overlay_block = f"""
<track>
<clipitem id="{overlay_clip_id}">
<name>{os.path.basename(overlay_path)}</name>
<duration>{duration_frames}</duration>
<rate>
<timebase>{timebase}</timebase>
<ntsc>FALSE</ntsc>
</rate>
<start>0</start>
<end>{duration_frames}</end>
{get_file_block(overlay_file_id, overlay_path)}
<compositemode>normal</compositemode>
</clipitem>
</track>
"""
else:
track_overlay_block = "<track></track>"
xml_content = f"""<?xml version="1.0" encoding="UTF-8"?>
<xmeml version="4">
<sequence id="{sequence_uuid}">
<name>{project_name}</name>
<duration>{duration_frames}</duration>
<rate>
<timebase>{timebase}</timebase>
<ntsc>FALSE</ntsc>
</rate>
{timecode_block}
<media>
<video>
<format>
<samplecharacteristics>
<rate>
<timebase>{timebase}</timebase>
<ntsc>FALSE</ntsc>
</rate>
<width>{width}</width>
<height>{height}</height>
<pixelaspectratio>square</pixelaspectratio>
</samplecharacteristics>
</format>
<track>
<clipitem id="{video_clip_id}">
<name>{os.path.basename(video_path)}</name>
<duration>{duration_frames}</duration>
<rate>
<timebase>{timebase}</timebase>
<ntsc>FALSE</ntsc>
</rate>
<start>0</start>
<end>{duration_frames}</end>
{get_file_block(video_file_id, video_path)}
<filter>
<effect>
<name>Basic Motion</name>
<effectid>basic</effectid>
<effectcategory>motion</effectcategory>
<effecttype>motion</effecttype>
<mediatype>video</mediatype>
<parameter authoringApp="PremierePro">
<parameterid>scale</parameterid>
<name>Scale</name>
<valuemin>0</valuemin>
<valuemax>1000</valuemax>
<value>{scale_value}</value>
</parameter>
<parameter authoringApp="PremierePro">
<parameterid>center</parameterid>
<name>Center</name>
<value>
<horiz>{default_horiz}</horiz>
<vert>{default_vert}</vert>
</value>
{center_keyframes}
</parameter>
</effect>
</filter>
</clipitem>
</track>
{track_overlay_block}
</video>
<audio>
<track>
<clipitem id="{audio_clip_id}">
<name>{os.path.basename(video_path)}</name>
<duration>{duration_frames}</duration>
<rate>
<timebase>{timebase}</timebase>
<ntsc>FALSE</ntsc>
</rate>
<start>0</start>
<end>{duration_frames}</end>
{get_file_block(audio_file_id, video_path)}
<sourcetrack>
<mediatype>audio</mediatype>
<trackindex>1</trackindex>
</sourcetrack>
<link>
<linkclipref>{video_clip_id}</linkclipref>
<mediatype>video</mediatype>
<trackindex>1</trackindex>
<clipindex>1</clipindex>
</link>
<link>
<linkclipref>{audio_clip_id}</linkclipref>
<mediatype>audio</mediatype>
<trackindex>1</trackindex>
<clipindex>1</clipindex>
</link>
</clipitem>
</track>
</audio>
</media>
</sequence>
</xmeml>
"""
return xml_content
if __name__ == "__main__":
pass
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